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Posted to commits@beam.apache.org by "Daniel Halperin (JIRA)" <ji...@apache.org> on 2017/04/03 16:46:41 UTC
[jira] [Assigned] (BEAM-1197) Slowly-changing external data as a
side input
[ https://issues.apache.org/jira/browse/BEAM-1197?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Daniel Halperin reassigned BEAM-1197:
-------------------------------------
Assignee: (was: Frances Perry)
> Slowly-changing external data as a side input
> ---------------------------------------------
>
> Key: BEAM-1197
> URL: https://issues.apache.org/jira/browse/BEAM-1197
> Project: Beam
> Issue Type: Wish
> Components: beam-model
> Reporter: Eugene Kirpichov
>
> I've seen repeatedly the following pattern: a user wants to join a PCollection against a slowly-changing external dataset: e.g. a file on GCS, or a Bigtable, etc.
> Side inputs come to mind, but current side input mechanisms don't allow for something like periodically reloading the side input.
> The best hacky solution I came up with for one use case is documented here: http://stackoverflow.com/questions/41254028/can-dataflow-sideinput-be-updated-per-window-by-reading-a-gcs-bucket/41271159#41271159 , we need to do better than this.
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